package chapter03;
class Student2{
    String name ;
    int age ;
    void read(){
        System.out.println("大家好，我是"+name+",年龄"+age);
    }
}
public class Example02 {
    public static void main(String[] args) {
        Student2 stu1 =  new Student2();
        Student2 stu2 = null;
        stu2 = stu1;
        stu1.name ="小明";
        stu1.age = 20;
        stu2.age = 50;
        stu1.read();
        stu2.read();
    }
}
